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| Titel |
{Analysis of Mass and Energy Fluxes in a Mediterranean Area} |
| VerfasserIn |
A. Casola, A. Longobardi, P. Villani |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027797
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| Zusammenfassung |
| Mass and energy interactions between soil, atmosphere and vegetation, influence all
hydrological processes modificating fainfall interception, infiltration, evapotraspiration,
surface runoff and groundwater recharge. The present analysis perform a study of fluxes
directions and an evaluation of energy balance closure in a typical Mediterranean short
vegetation area, using data series obtained from an eddy covariance measure station, located
in the Campania region, Southern Italy. Energy balance closure was evaluated by statistical
regression of turbulent energy fluxes, latent and sensible heat against net radiation less the
energy stored, and by calculating the energy balance ratio, the ratio between turbulent energy
fluxes to available energy. Both method indicate a general lack of closure in the order
of 10%. The analysis was also performed on different seasons of the year with
the aim to evaluate the smaller imbalance and to highlight influencing factors and
sampling errors on balance closure. In particuar, friction velocity turned out to
have a great effect on the turbulence development and thus on the balance closure. |
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